JPH0374934B2 - - Google Patents
Info
- Publication number
- JPH0374934B2 JPH0374934B2 JP20757784A JP20757784A JPH0374934B2 JP H0374934 B2 JPH0374934 B2 JP H0374934B2 JP 20757784 A JP20757784 A JP 20757784A JP 20757784 A JP20757784 A JP 20757784A JP H0374934 B2 JPH0374934 B2 JP H0374934B2
- Authority
- JP
- Japan
- Prior art keywords
- crystal
- gas pressure
- resonant
- voltage
- comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000013078 crystal Substances 0.000 claims description 37
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
- G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
- G01L9/0022—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a piezoelectric element
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20757784A JPS6184536A (ja) | 1984-10-03 | 1984-10-03 | 水晶式気体圧力計 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20757784A JPS6184536A (ja) | 1984-10-03 | 1984-10-03 | 水晶式気体圧力計 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6184536A JPS6184536A (ja) | 1986-04-30 |
| JPH0374934B2 true JPH0374934B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-11-28 |
Family
ID=16542057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20757784A Granted JPS6184536A (ja) | 1984-10-03 | 1984-10-03 | 水晶式気体圧力計 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6184536A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1984
- 1984-10-03 JP JP20757784A patent/JPS6184536A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6184536A (ja) | 1986-04-30 |